Ammeter bypass

Some guys (I did back in the 70's) just eliminated the big red and big black wire connector terminals, drilled through the connector, and ran larger wire straight through. If you don't mind that it works OK. Eliminating the ammeter is up to you.......depends on the condition of it, and how much alternator you intend to use. Anything more than 60A I would bypass it.

Go over to MyMopar and download about a 72 service manual and look in the diagrams (likely the larger cars, not A bodies) for the optional 65A alternator wiring. This was commonly known as "police / fleet/ taxi" and was in effect a connector bypass but kept the ammeter. Notice, in the diagram, they fed larger wire through the firewall SEPARATE from the bulkhead connector. One of the old wires (red I think) was taped off and not used after that.